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Interest Income and Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Interest Income Expense Net [Abstract]
Loans held for investment, net	$ 95,120	$ 93,224
Investment securities	48,137	65,466
Margin balances	10,131	13,440
Financial instruments owned, net	4,574	6,313
Other	3,215	12,628
Total interest income	161,177	191,071
Bank deposits	9,569	28,066
Senior notes	11,193	11,122
Federal Home Loan Bank advances	2,353	1,678
Other	1,242	8,582
Total interest expense	$ 24,357	$ 49,448

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Other interest and dividend income expense net.

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Interest and fee income generated by loans the Entity intends and has the ability to hold for the foreseeable future, or until maturity or payoff, including commercial and consumer loans, whether domestic or foreign, which may consist of: (1) industrial and agricultural; (2) real estate; and (3) real estate construction loans; (4) trade financing; (5) lease financing; (6) home equity lines-of-credit; (7) automobile and other vehicle loans; and (8) credit card and other revolving-type loans. Also includes interest income for leases held by the Entity.

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Amount of the cost of borrowed funds accounted for as interest expense.

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